It isn't just Windows that cause users issues.

Some Mac users are having problems after upgrading to Snow leopard.

One user had this when reporting an error to Apple

http://i239.photobucket.com/albums/ff79/en...07at82851PM.png

More info here

http://www.betanews.com/article/Why-is-Joh...blem/1255449896

There is a bug that erases all the Personal User Data which is very creepy.

In fact, it is easier to hack a Mac compared to a Windows based PC. The only thing is that, there is such a small number of Macs that the hackers think it's a waste of time creating viruses for the Mac.